Date:	Tue, 26 Sep 2000 17:33:44 +0200 (IST)
From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender:	eliz AT is
To:	Edmund Horner <ejrh AT paradise DOT net DOT nz>
cc:	djgpp AT delorie DOT com
Subject:	Re: C Library: mmap() function
In-Reply-To:	<969980620.314295@shelley.paradise.net.nz>
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Reply-To:	djgpp AT delorie DOT com
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On Wed, 27 Sep 2000, Edmund Horner wrote:

> Can the mmap() function be implemented in the DJGPP libc?

Yes, but only for allocating memory and then only for some values of
the arguments.  For example, memory-mapped files cannot be supported,
and MAP_FIXED in the flags will not work (since the DPMI client has no 
control on the address where memory is allocated).

> If so, would it be a simple port from, say, the Linux glibc source, or would
> it (as I suspect) involve a lot of fiddling with DPMI?

I cannot imagine that a Linux source will be a good starting point,
since Linux uses a totally different memory organization and protection
methods.

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